TWI836588B - Movable carrier and method for adjusting tilt angle of seat of movable carrier - Google Patents

Abstract

A movable carrier is provided. The movable carrier includes: a frame, a seat, a driving device, and a sensor. The seat is arranged on the frame and capable of pitching and rotating around a rotation axis relative to the frame. The driving device is installed on the frame and coupled to the seat, the driving device being configured to drive the seat to pitch and rotate relative to the frame. The sensor is configured to acquire a tilt angle of the seat relative to a horizontal plane, generate tilt angle data based on the tilt angle. The sensor is electrically connected to the driving device, so that the driving device operates to adjust the tilt angle of the seat according to the tilt angle data. A method for adjusting the tilt angle of the seat of the movable carrier is also disclosed.

Description

Mobile vehicle and method for adjusting the tilt angle of a seat of the mobile vehicle

The present application relates to a mobile vehicle and a method for adjusting the inclination angle of a seat of the mobile vehicle.

A stroller is a common device that can carry a child and can be pushed by the child's guardian.

Children's strollers usually have a frame, running mechanism and seat. The frame is used to assemble other parts of the stroller; the running mechanism provides the walking function of the stroller, usually wheels installed under the frame; the seat is used to carry children, and is usually installed in the middle of the frame.

In the prior art, fixed installation is usually adopted between the seat and the frame, that is, the pitch angle between the frame and the seat is not adjustable. In this way, when the stroller travels on a non-horizontal road surface (such as up and down slopes, up and down stairs), the frame will be in a non-horizontal position, that is, the frame may tilt forward (down) or backward (up). At this time, the seat will tilt following the tilt of the frame. As a result, the seat may lose its level, causing the child in the seat to tend to slide forward or backward. This is neither comfortable nor safe for children.

Therefore, it is necessary to propose a seat adjustment structure that can automatically adjust the seat according to the pitch angle of the frame so that the seat is always maintained in a horizontal state.

A mobile vehicle according to the present application includes a frame, a seat, a drive device and a sensor. The seat is arranged on the frame and can pitch and rotate relative to the frame around a rotation axis. The drive device is mounted on the frame and connected to the seat. The drive device is configured to drive the seat to pitch and rotate relative to the frame. The sensor is used to obtain the tilt angle of the seat relative to the horizontal plane and generate a tilt angle data based on the tilt angle. The sensor is electrically connected to the drive device so that the drive device operates according to the tilt angle data to adjust the tilt angle of the seat, and sends the control signal to the drive device to control the operation of the drive device.

In one embodiment, the driving device is disposed between the frame and the seat; the mobile vehicle also includes an actuating mechanism, one end of which is connected to the driving device, and the other end is hingedly mounted below the seat and Carrying the seat, the actuating mechanism can be driven by the driving device to telescope, so that the seat rotates around the rotation axis relative to the frame, thereby changing the angle between the frame and the seat.

In one embodiment, the seat is fixed to a transverse pivot axis rotatably connected to the frame; the drive device is coupled to the transverse pivot axis and capable of driving rotation of the transverse pivot axis.

In one embodiment, the axis of rotation is a transverse horizontal axis of the seat and the actuating mechanism telescopes vertically.

In one embodiment, the driving device is a motor; the actuating mechanism includes a screw and a screw sleeve, wherein one end of the screw is connected to the motor, the operation of the motor can drive the screw to rotate, the other end of the screw is spirally connected to one end of the screw sleeve, and the other end of the screw sleeve is hinged and mounted under the seat.

In one embodiment, the sensor is mounted on the seat to obtain the tilt angle of the seat relative to the horizontal plane; or the sensor is mounted on the frame to obtain the tilt angle of the frame relative to the horizontal plane, and the tilt angle of the seat relative to the horizontal plane is obtained by calculation based on the tilt angle of the frame and the positional relationship between the frame and the seat.

In one embodiment, the mobile vehicle further includes a base, the base is fixed to the frame, and the drive device is hingedly mounted to the base.

In one embodiment, the actuating mechanism includes a connecting rod, the driving device is fixedly mounted on the connecting rod, and the connecting rod is hinged to the frame.

In one embodiment, the drive device and the actuating mechanism are located laterally midway below the seat.

In one embodiment, the drive device and the actuating mechanism are provided in two sets, which are symmetrically located at the two lateral ends of the seat.

In one embodiment, the mobile vehicle further includes a controller electrically connected to the sensor and the driving device. The controller calculates the movement amount of the driving device according to the tilt angle obtained by the sensor, and converts the movement amount into a control signal and sends it to the driving device.

In one embodiment, the mobile vehicle further includes a communication module that is electrically connected to the controller and wirelessly connected to a remote control terminal. The remote control terminal can send signals to the communication module. The communication module The group passes the signal to the controller.

According to the present application, a method for adjusting the tilt angle of a seat of a mobile vehicle comprises: detecting the tilt angle A of the seat of the mobile vehicle by a sensor on the mobile vehicle; when A=0 is detected, the driving device on the mobile vehicle is not activated; when A≠0 is detected, the driving device is activated to drive the seat to move in a direction to reduce the absolute value |A| of the tilt angle A until A=0 is detected.

At時，啟動該驅動裝置以減小|A|，直至檢測到A<At。 According to a method of adjusting the inclination angle of a seat on a mobile vehicle according to the present application, the method includes: presetting a tilt threshold At; and detecting the inclination of the seat on the mobile vehicle through a sensor on the mobile vehicle. Angle A; when |A|<At is detected, the driving device on the mobile vehicle will not be started. When |A|

When At, the drive is started to decrease |A| until A<At is detected.

At時，開始計時同時繼續檢測該傾斜角度A，當時長T

T0且在此期間沒有檢測到|A|<At的情況，則啟動該驅動裝置以減小|A|，直至檢測到A<At，而當時長T<T0且在此期間檢測到|A|<At時，則重新檢測且計時清零。 In one embodiment, a time threshold T0 is preset; wherein, when |A|

When At, start timing and continue to detect the tilt angle A, which is long T

T0 and if |A| <At, the test is re-detected and the timer is cleared.

i時，計算Aj-i、Aj-i+1…Aj的平均值Am；如果|Am-At|>0，則通過該行動載具上的驅動裝置調節該座椅的傾斜角度A，使得|Am-At|=0且清空記錄的傾斜角度數據。 According to the present application, a method for adjusting the tilt angle of a seat of a mobile vehicle comprises: presetting a fixed time interval Ts, a detection cycle number i and a tilt valve value At; at each detection cycle, the tilt angle A of the seat on the mobile vehicle is detected by a sensor on the mobile vehicle, and recorded in sequence as A0, A1, A2 ... Aj; when any moment j

i, calculate the average value Am of Aj-i, Aj-i+1…Aj; if |Am-At|>0, adjust the tilt angle A of the seat through the driving device on the mobile vehicle so that |Am-At|=0 and clear the recorded tilt angle data.

100: Seat adjustment structure

110: Base

115: Shell

120: Drive device

130: Actuating mechanism

131:Screw

132: Thread sleeve

140: Sensor

151: First hinge shaft

152: Transverse pivot axis

160: Controller

170:Communication module

180: Remote control terminal

200: Seat

300: Frame

400: Baby stroller

Figure 1 is a stroller according to the prior art, showing the frame and wheels.

Figure 2 is a children's car according to the prior art, showing the frame, seat and wheels.

Figure 3 is a children's vehicle according to the present application, in which a seat adjustment structure according to the present application is provided between the vehicle frame and the seat.

Figure 4 shows the seat and seat adjustment structure according to this application.

Figure 5 is a schematic side view of a seat and a seat adjustment structure according to the present application, with the base of the seat adjustment structure in a horizontal position.

FIG. 6 is a schematic side view of a seat and a seat adjustment structure according to the present application, wherein the base of the seat adjustment structure is in a forward tilted position.

Figure 7 is a schematic side view of a seat and a seat adjustment structure according to the present application, with the base of the seat adjustment structure in a reclined position.

Figure 8 is a flow chart of the method for adjusting the reclining angle of a seat according to the present application.

Figure 9 is a flow chart of another method of adjusting the inclination angle of a seat according to the present application.

Figure 10 is a flow chart of another method for adjusting the reclining angle of a seat according to the present application.

Figure 11 is a functional block diagram of the seat adjustment structure according to the present application.

Figure 12 is a functional block diagram of a seat adjustment structure according to another embodiment of the present application.

Figure 13 shows the installation position of the seat adjustment structure according to another embodiment of the present application.

Figure 14 is a schematic side view of a seat and a seat adjustment structure according to another embodiment of the present application, in which the housing of the seat adjustment structure is in a horizontal position.

FIG. 15 is a schematic side view of a seat and a seat adjustment structure according to another embodiment of the present application, wherein the shell of the seat adjustment structure is in a forward tilted position.

FIG. 16 is a schematic side view of a seat and a seat adjustment structure according to another embodiment of the present application, wherein the shell of the seat adjustment structure is in a rearwardly tilted position.

Although the invention is illustrated and described herein with reference to specific embodiments, the invention should not be limited to the details shown. Rather, several modifications may be made to these details within the scope of equivalents of the claims and without departing from the invention.

The directions "front", "back", "upper", "lower" and so on mentioned in this article are only for the convenience of understanding. The present invention is not limited to these directions, but can be adjusted according to the actual situation. Although the present application has been described with reference to typical embodiments, the terms used are illustrative and exemplary, not restrictive terms.

Refer to Figures 1 and 2. Figure 1 shows a frame 300 of a baby stroller 400 of the prior art, and Figure 2 shows the frame 300 and the seat 200 of the baby stroller 400 of the prior art. In Figure 2, the seat 200 is directly fixed to the frame 300, that is, the seat 200 cannot rotate relative to the frame 300. In this way, when the pitch angle of the frame 300 relative to the horizontal plane changes (for example, uphill or downhill), the seat 200 will tilt along with the pitch angle of the frame 300. This is not good for the comfort and safety of the passengers.

To this end, the embodiment of the present application proposes a baby stroller 400, wherein the seat 200 has an automatic angle adjustment function to allow the pitch angle of the seat 200 to remain unchanged when the pitch angle of the frame 300 changes.

The mobile vehicle according to the present application will be described as a whole with reference to Figure 3. The mobile vehicle in this embodiment is a children's car. As shown in the figure, the mobile vehicle includes: a frame 300, a seat 200, a seat adjustment structure 100, wheels and armrests. Among them, the seat 200 is not fixedly installed on the vehicle frame 300, but is installed on the vehicle frame 300 through a transverse pivot axis. The lateral pivot axis passes through the junction of the lateral part and the vertical part of the seat 200 and the middle part of the vertical frame of the frame 300, thereby connecting the seat 200 to the frame 300. In other embodiments, the transverse pivot axis is disposed at a pivot joint of the backrest portion of the seat 200 . Therefore, those skilled in the art should understand that the arrangement of the transverse pivot axis is not limited to this, as long as the seat 200 can be allowed to rotate relative to the frame 300 around the rotation axis. The seat adjustment structure 100 is fixed to the vehicle frame 300 and is at least partially located below the seat 200 to carry and adjust the pitch angle of the seat 200 .

The seat adjustment structure 100 according to the present application is generally described with reference to FIG. 4 . As shown in the figure, the seat adjustment structure 100 includes a base 110, a driving device 120, an actuating mechanism 130, and a sensor 140. With reference to FIGS. 3 and 4 , the base 110 is fixed to the vehicle frame 300 and carries other components of the seat adjustment structure 100 . In the embodiment shown in Figure 4, the base 110 is a plate-shaped component with an L-shaped transverse cross-section. The upper end of the base 110 is fixedly connected to the frame 300 near the transverse pivot axis of the seat 200, and the lower end extends in the horizontal direction. to the underside of the front of the seat 200 . It should be understood that the base 110 may also have other shapes, such as a simple horizontal plate or a frame composed of bars. The base 110 also does not have to be connected to the frame 300 at the lateral pivot axis of the seat 200, but may be connected to the frame 300 at any suitable location as long as it can carry the components of the seat adjustment structure 100.

In fact, the base 110 can be considered an extension of the vehicle frame 300 . In some embodiments, the base 110 may not be provided, and the components of the seat adjustment structure 100 may be mounted directly to the vehicle frame 300 .

The drive device 120 is a power device that can provide an actuating force. The drive device 120 is placed on the upper surface of the base 110, so as to be located between the base 110 and the seat 200. One end of the actuating mechanism 130 is installed in the drive device 120 from above the drive device 120, and the other end is connected to the supporting seat 200 from the lower side of the seat 200, and the position of the actuating mechanism 130 is close to the end of the seat 200 opposite to the transverse pivot axis in the front-rear direction. The drive device 120 can output a driving force to change the length of the actuating mechanism 130 (described in detail below). Thus, through the drive device 120 and the actuator mechanism 130, one end of the seat 200 is supported on the base 110 (or on the frame 300 in an embodiment without the base 110) in a controllable (i.e., liftable) manner, thereby allowing the relative pitch angle between the seat 200 and the frame 300 to be controlled.

The sensor 140 is mounted on the seat 200 or on the base 110 of the seat adjustment structure 100 (shown in the figure as being mounted on the base 110), and is electrically connected to the controller 160, which is electrically connected to the drive device 120. FIG. 4 shows that the controller 160 is mounted on the base 110, but it should be understood that the controller 160 can be mounted at any position of the seat 200 or the frame 300, and this application does not limit it. The sensor 140 is used to detect the pitch angle of the seat 200 relative to the horizontal plane and transmit the detected angle to the drive device 120. According to the preset program, the controller 160 determines how the drive device 120 outputs the driving force to control the pitch angle of the seat 200 based on the tilt angle data sent by the sensor 140. The control method will be described in detail later.

Referring to FIG. 11 , a functional block diagram of a seat adjustment structure 100 according to the present application is shown. As shown in the figure, the sensor 140 is electrically connected to the controller 160 to transmit the detected seat tilt angle data to the controller 160 . The controller 160 determines how to control the driving device 120 by calculating the seat inclination angle data according to the method of adjusting the inclination angle of the seat in this application. Furthermore, the controller 160 is electrically connected to the driving device 120 to send control signals to the driving device 120 .

Referring to FIG. 12, a functional block diagram of another embodiment of the seat adjustment structure 100 according to the present application is shown. As shown in the figure, the controller 160 is also electrically connected to the communication module 170. The communication module 170 is wirelessly connected to the remote control terminal 180. The remote control terminal 180 can be, for example, a remote control or an application (APP) installed on the user's smartphone. This APP can display the user operation screen on the smartphone, so the user can send a signal to the communication module 170 through the remote control terminal 180, such as starting or shutting down the seat adjustment structure 100, or setting the parameters of the seat adjustment structure 100.

In other embodiments, a mechanical switch may also be provided as the operating interface. The mechanical switch can be disposed on the handle of the vehicle frame 300 (not shown).

The following is an actual example to illustrate how a caregiver (i.e., user) activates the above-mentioned seat tilt angle adjustment function: When a caregiver is pushing a baby stroller and encounters a downhill or uneven road section, the caregiver can use an APP installed in a smart phone or press a mechanical switch on the handle to activate the automatic tilt angle adjustment function. At this time, the tilt angle of the seat 200 can be dynamically adjusted so that the seat 200 maintains a fixed angle with the horizontal plane or the plane set by the caregiver, so that the infant riding in the baby stroller 400 will not feel uncomfortable due to the uneven road section.

Please refer to the embodiments of Figures 13 to 16, which show another configuration of the seat adjustment structure 100. As shown in Figure 13, the seat adjustment structure 100 according to the present application is housed in a housing 115 at the connection between the seat 200 and the frame 300 (not shown in Figure 13). The housing 115 can be a part of the frame 300, thereby minimizing the increase in weight of the frame 300 for the seat adjustment structure 100. As shown in Figure 14, the seat 200 is fixedly connected to the transverse pivot 152, and the transverse pivot 152 is pivotally connected to the frame 300 (not shown in the figure). The actuating mechanism 130 is fixed to the housing 115 and thus fixed to the frame 300. The actuating mechanism 130 is connected to the transverse pivot shaft 152 by means of gear engagement, belt connection, worm-worm, etc., directly driving the rotation of the transverse pivot shaft 152, thereby driving the pitch rotation of the seat 200 relative to the frame 300. The sensor 140 and the controller 160 are also installed in the housing 115 (not shown in the figure) and are electrically connected to the actuating mechanism 130.

It should be understood that in the embodiments of Figures 13 to 16, the actuating mechanism 130 as shown in Figures 5 to 7 can also be used to drive the pitch rotation of the seat 200.

Now, referring to Figures 5 to 7, the specific operation of adjusting the pitch angle of the seat 200 by the seat adjustment structure 100 according to the present application is described.

As shown in FIG. 5 , the actuator 130 is supported on the drive device 120. When the frame 300 (and the base 110) are in a horizontal position, the actuator 130 extends substantially in the vertical direction. In the embodiment shown in the figure, the actuator 130 includes a screw 131 and a screw sleeve 132, wherein the lower end of the screw 131 is engaged in the drive device 120, for example, connected to the drive device 120 as a motor through a conical gear. In this way, the lateral rotation of the drive device 120 is converted into the vertical rotation of the screw 131. The outer portion of the screw 131 has an external thread, and the inner portion of the screw sleeve 132 has an internal thread matching it. In this way, when the screw 131 rotates in different directions, the screw sleeve 132 will rise or fall along the screw 131, thereby changing the length of the entire actuating mechanism 130.

In other embodiments, the actuating mechanism 130 may also be in different forms. For example, the actuating mechanism 130 may be a hydraulic cylinder, and the driving device 120 is a hydraulic pump capable of sending liquid into the hydraulic cylinder to change the length of the hydraulic cylinder. The actuating mechanism 130 may also be a scissor link structure that can be driven to raise or lower. The actuating mechanism 130 may also be any suitable length-changing or elevating mechanical structure known in the art.

The upper end of the actuating mechanism 130 is connected to the seat 200 through a transverse first hinge shaft 151 . The first hinge shaft 151 may be disposed in a front-to-back sliding groove (not shown in the figure) in the seat 200 to allow the position of the first hinge shaft 151 to be finely adjusted forward and backward as the angle of the actuating mechanism 130 changes. In some other embodiments, the seat 200 does not have a slide groove, but the driving device 120 is pivoted to the base 110 through another hinge shaft (not shown in the figure), so that when the screw rod 131 is rising or falling, The driving device 120 can be pivoted in conjunction with each other to adjust the inclination angle of the seat 200 . Alternatively, the base 110 can be pivoted to adjust the inclination angle of the seat 200, which is not limited by this application.

In the embodiment shown in the figures, the actuation mechanism 130 is located in the middle of the seat 200 in the transverse direction. It should be understood that in other embodiments, the actuating mechanism 130 may also be located on one side of the seat 200, such as the left or right side. In other embodiments, multiple actuating mechanisms 130 may be provided, for example, one actuating mechanism 130 is provided on the left and right sides of the seat 200, and the multiple actuating mechanisms 130 may be driven by the same driving device 120. Or they are driven by different driving devices 120 respectively.

In the state shown in Figure 6, the vehicle frame 300 changes from a horizontal position to a forward tilted position. In this case, the seat 200 will first change to the forward leaning position along with the vehicle frame 300 . Subsequently, when the sensor 140 detects the forward tilt angle of the seat 200, the tilt angle data will be transmitted to the driving device 120, so that the driving device 120 drives to extend the length of the actuating mechanism 130, thereby causing the seat 200 to return horizontal position.

In addition, the seat adjustment structure 100 is provided with an operation unit that can calculate the length of the actuator 130, and the operation unit is electrically connected to the sensor 140 and/or the drive device 120. For example, the operation unit is a grating counter, or the operation unit is a counter of a stepper motor. In this way, when the drive device 120 changes the length of the actuator 130, it will automatically calculate the current length of the actuator 130 and use the length for the control program.

The sensor 140 is, for example, a gyroscope, which can instantly detect its pitch angle relative to the horizontal plane, but the application is not limited to this. When the sensor 140 is installed on the seat 200, the pitch angle of the sensor 140 itself is the pitch angle of the seat 200. When the sensor 140 is installed on the base 110, the pitch angle of the sensor 140 is the pitch angle of the base 110, and the lateral pivot axis of the seat 200 can be determined based on the connection point of the actuating mechanism 130 and the base 110. The length, the length from the connection point of the actuating mechanism 130 and the seat 200 to the lateral pivot axis of the seat 200, and the length of the actuating mechanism 130 are used to calculate the pitch angle between the seat 200 and the base 110, thereby The pitch angle of the seat 200 is calculated according to the pitch angle of the base 110 and the pitch angle between the seat 200 and the base 110 .

In the state shown in Figure 7, the frame 300 changes from a horizontal position to a rearward-leaning position. In this case, the seat 200 first changes to a rearward-leaning position along with the frame 300. Subsequently, the sensor 140 detects the rearward-leaning angle of the seat 200 and transmits the tilt angle data to the drive device 120, so that the drive device 120 drives to shorten the length of the actuating mechanism 130, thereby returning the seat 200 to a horizontal position.

During the above adjustment process, the actuating mechanism 130 will tilt and swing along with the base 110 . In this way, the position of the first hinge axis 151 relative to the seat 200 will change. For example, a chute in the seat 200 for accommodating the first hinge axis 151 allows such a position change.

Now, referring to Figures 8 to 10, the operation method of the seat adjustment structure 100 according to the present application is described.

In the embodiment shown in FIG. 8, a sensitive adjustment strategy of "immediate adjustment" is adopted. That is, the sensor 140 detects the tilt angle A of the seat 200 in real time and transmits the tilt angle data to the controller 160. When the sensor 140 detects that the tilt angle A is not 0, the controller 160 immediately controls the drive device 120 to drive. Specifically, when A<0 (the seat tilts forward), the drive is performed by extending the actuator 130; when A>0 (the seat tilts backward), the drive is performed by shortening the actuator 130. During the adjustment process, the sensor 140 can continuously detect the tilt angle A of the seat 200, and when the tilt angle A=0, the drive is stopped.

In the embodiment shown in FIG. 9, a non-sensitive adjustment strategy of "delayed adjustment" is adopted. That is, a tilt valve value At is first preset. The sensor 140 detects the tilt angle A of the seat 200 in real time and transmits the tilt angle data to the controller 160. When the absolute value |A| of the tilt angle A is less than At, the seat adjustment structure 100 will not adjust the angle of the seat 200. When the absolute value |A| of the tilt angle A is greater than or equal to the tilt valve value At, the seat adjustment structure 100 will adjust the pitch angle of the seat 200 to A less than the tilt valve value At.

According to another non-sensitive adjustment strategy of "delayed adjustment", a time valve value T0 is further preset. When the absolute value |A| of the tilt angle A is greater than or equal to the tilt valve value At, the seat adjustment structure 100 will not immediately adjust the angle of the seat 200, but will start a timer and continue to monitor the tilt angle A while timing. When the time length T recorded by the timer is greater than or equal to T0 and |A| is not detected to be less than the tilt valve value At during this period, the drive device 120 is started to reduce |A| until A is detected to be less than the tilt valve value At; and when the time length T is less than T0 and |A| is detected to be less than the tilt valve value At during this period, the detection is repeated and the timer is reset.

i，則計算此前的i個週期中的傾斜角度A的平均值，即Aj-i、Aj-i+1…Aj的平均值Am。 如果|Am|>At，則通過驅動裝置120調節座椅角度，使得Am=0，且清空之前記錄的傾斜角度數據。即，在調節座椅角度之後，接下來檢測到的座椅的傾斜角度A將重新被記錄為A0、A1…。 In the embodiment shown in Figure 10, another "deferred adjustment" strategy is used. First, a fixed time interval Ts is preset, for example, 50 milliseconds, and then a detection cycle number i, for example, 100 cycles is preset. The sensor 140 detects the inclination angle A of the seat 200 every one detection period, and records the inclination angle A detected in each detection period as A0, A1, A2...Aj in sequence. For example, the sensor 140 detects the tilt angle A of the seat 200 when the program start time is 0, and records it as A0; the sensor 140 detects the tilt angle A of the seat 200 again after 50 milliseconds, and records it as A0. The record is A1, and so on. When at a certain moment, the data number of the tilt angle is greater than or equal to the preset number of detection cycles, that is, j

i, then calculate the average value of the tilt angle A in the previous i periods, that is, the average value Am of Aj-i, Aj-i+1...Aj. If |Am|>At, the seat angle is adjusted through the driving device 120 so that Am=0, and the previously recorded tilt angle data is cleared. That is, after the seat angle is adjusted, the next detected inclination angle A of the seat will be re-recorded as A0, A1...

According to the above-mentioned multiple "delayed adjustment" strategies, the sensitivity of the seat adjustment structure 100 is reduced. In this way, when the baby carriage 400 is traveling on a bumpy or undulating road surface, the seat adjustment structure 100 will not repeatedly adjust the angle of the seat 200, thereby improving the intelligence of the overall device.

To sum up, this application proposes a seat adjustment structure 100 . It should be understood that the seat adjustment structure 100 can be used for the seat 200 of the stroller 400 or other types of seats 200 . This application also proposes a children's vehicle 400 and a control method of the seat adjustment structure 100 . According to the above-mentioned device and method of the present application, the pitch angle of the seat 200 of the stroller 400 can be beneficially automatically adjusted so that the seat 200 is always maintained in a horizontal position, thus providing a good user experience.

Since this application can be implemented in various forms without departing from the spirit and essence of this application, it should be understood that the above embodiments are not limited to any of the aforementioned details, but should be interpreted in the broadest sense within the scope defined by the claims, so all changes falling within the claims or their equivalent scope should be covered by the claims.

100: Seat adjustment structure

110: Base

120: Drive device

130: Actuating mechanism

140: Sensor

160:Controller

200: Seats

Claims (12)

A mobile vehicle, including: a frame; a seat, which is arranged on the frame and can pitch and rotate around a rotation axis relative to the frame; a driving device, which is arranged between the frame and the seat, and the driving device The device is configured to drive the seat to pitch and rotate relative to the frame, and the driving device is a motor; a sensor is used to obtain the inclination angle of the seat relative to the horizontal plane, and generate an inclination angle data based on the inclination angle, where , the sensor is electrically connected to the driving device, so that the driving device operates according to the tilt angle data to adjust the tilt angle of the seat; and the actuating mechanism includes a screw rod and a screw sleeve, one end of the screw rod is connected The operation of the motor can drive the screw to rotate. The other end of the screw is spirally connected to one end of the screw sleeve. The other end of the screw sleeve is hingedly installed below the seat and carries the seat. This causes The driving mechanism can be driven by the driving device to telescope, so that the seat rotates around the rotation axis relative to the frame, thereby changing the angle between the frame and the seat. The mobile vehicle as claimed in claim 1, wherein: the seat is fixed to a transverse pivot axis, which is rotatably connected to the frame; the driving device is coupled to the transverse pivot axis and can drive the Rotation of lateral pivot axis. The mobile vehicle as claimed in claim 1, wherein the rotation axis is a transverse horizontal axis of the seat, and the actuating mechanism telescopes in the vertical direction. The mobile vehicle as described in claim 1, wherein: the sensor is mounted on the seat to obtain the tilt angle of the seat relative to the horizontal plane; or the sensor is mounted on the frame to obtain the tilt angle of the frame relative to the horizontal plane, and the tilt angle of the seat relative to the horizontal plane is obtained by calculation based on the tilt angle of the frame and the positional relationship between the frame and the seat. A mobile vehicle as described in claim 1, wherein: the mobile vehicle further includes a base, the base is fixed to the frame, and the drive device is hingedly mounted to the base. The mobile vehicle as claimed in claim 1, wherein: the actuating mechanism includes a connecting rod, the driving device is fixedly installed on the connecting rod, and the connecting rod is hingedly connected to the frame. The mobile vehicle as claimed in claim 1, wherein the driving device and the actuating mechanism are located at the transverse middle under the seat. As described in claim 1, the mobile vehicle, wherein: the driving device and the actuating mechanism are provided in two sets, which are symmetrically located at the two lateral ends of the seat. The mobile vehicle as claimed in claim 1, wherein: the mobile vehicle further includes a controller electrically connected to the sensor and the driving device, and the controller determines the inclination angle according to the tilt angle obtained by the sensor. The movement amount of the driving device is calculated, and the movement amount is converted into a control signal and sent to the driving device. A mobile vehicle as described in claim 9, wherein: the mobile vehicle further includes a communication module, which is electrically connected to the controller and wirelessly connected to a remote control terminal, the remote control terminal can send a signal to the communication module, and the communication module transmits the signal to the controller. A method for adjusting the inclination angle of a seat on a mobile vehicle, including: presetting a tilt threshold At and a time threshold T0; detecting the inclination of the seat on the mobile vehicle through a sensor on the mobile vehicle Angle A; when |A|<At is detected, the driving device on the mobile vehicle will not be started. When |A|

When At, start the driving device to reduce |A| until A<At is detected; when |A| is detected

When At, start timing and continue to detect the tilt angle A, which is long T

T0 and if |A| <At, the test is re-detected and the timer is cleared. A method for adjusting the tilt angle of a seat of a mobile vehicle, including: presetting a fixed time interval Ts, a detection cycle number i and a tilt threshold At; each interval of a detection cycle, through the sensor on the mobile vehicle The detector detects the tilt angle A of the seat on the mobile vehicle, and records it as A0, A1, A2...Aj in sequence; when any time j

When i, calculate the average value Am of Aj-i, Aj-i+1...Aj; if |Am|>At, adjust the inclination angle A of the seat through the driving device on the mobile vehicle so that Am=0 And clear the recorded tilt angle data.